InChI=1S/C19H26O9/c1-10(2)7-8-26-13(20)9-11-3-5-12(6-4-11)27-19-16(23)14(21)15(22)17(28-19)18(24)25/h3-6,10,14-17,19,21-23H,7-9H2,1-2H3,(H,24,25)